light TOYOTA PRIUS 2017 4.G Owners Manual

638
PRIUS_OM_OM47B54U_(U)
7-3. Do-it-yourself maintenance
■Rear turn signal lights and back-up lightsOpen the back door. Insert a
screwdriver into the cover on
the side of the light and
detach the claws indicated by
the dotted lines near the
exterior of the vehicle. Then,
pry the cover and pull it
toward the rear of the vehicle
to detach the claws indi-
cated by the dotted lines
near the vehicle interior.
To prevent damage to the cover, protect the tip of the screwdriver with a
rag.
Remove the 2 screws.
Pull the light unit toward the
rear of the vehicle to remove
it.
1
2
3

PRIUS_OM_OM47B54U_(U)
6397-3. Do-it-yourself maintenance
7
Maintenance and care
Turn the bulb base counterclockwise.
Remove the light bulb.
Install a new light bulb then install the bulb base to the light unit
by inserting it and turning the bulb base clockwise.4
Rear turn signal lightBack-up light
5
Rear turn signal lightBack-up light
6
Rear turn signal lightBack-up light

640
PRIUS_OM_OM47B54U_(U)
7-3. Do-it-yourself maintenance
Align the grooves on the light
unit with the claws, and insert
the light unit straight so that
the 2 pins on the light unit fit
into the holes. Confirm that
the light unit is completely
secured.
Install the 2 screws.
Install the cover.7
8
9

PRIUS_OM_OM47B54U_(U)
6417-3. Do-it-yourself maintenance
7
Maintenance and care
■Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by
your Toyota dealer.
● Headlights and daytime running lights
● Front side marker lights
● Parking lights (LED type: if equipped)
● Fog lights
● Rear side marker/tail lights
● Stop lights
● High mounted stoplight
● License plate lights
■LED lights
The lights other than the parking lights (bulb type: if equipped), front turn sig-
nal lights, rear turn signal lights and back-up lights each consist of a number
of LEDs. If any of the LEDs burn out, take your vehicle to your Toyota dealer
to have the light replaced.
■ Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not
indicate a malfunction. Contact your Toyota dealer for more information in the
following situations:
●Large drops of water have built up on the inside of the lens.
● Water has built up inside the headlight.
■ When replacing light bulbs
→P. 632

642
PRIUS_OM_OM47B54U_(U)
7-3. Do-it-yourself maintenance
WARNING
■Replacing light bulbs
● Be sure to stop the hybrid system and turn off the lights. Do not attempt to
replace the bulb immediately after turning off the lights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
● Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
● Do not attempt to repair or disassemble light bulbs, connectors, electric
circuits or component parts.
Doing so may result in death or serious injury due to electric shock.
■ To prevent damage or fire
● Make sure bulbs are fully seated and locked.
● Check the wattage of the bulb before installing to prevent heat damage.

643
PRIUS_OM_OM47B54U_(U)
8When trouble arises
8-1. Essential informationEmergency flashers .......... 644
If your vehicle has to be stopped in an
emergency ...................... 645
8-2. Steps to take in an emergency
If your vehicle needs to be towed ......................... 646
If you think something is wrong .............................. 652
If a warning light turns on or a warning buzzer
sounds ............................ 653
If a warning message is displayed......................... 663
If you have a flat tire (vehicles with
spare tire)........................ 670
If you have a flat tire (vehicles without
spare tire)........................ 684
If the hybrid system will not start ........................... 703
If the electronic key does not operate properly........ 705
If the 12-volt battery is discharged ...................... 708
If your vehicle overheats ... 714
If the vehicle becomes stuck ............................... 719

644
PRIUS_OM_OM47B54U_(U)
8-1. Essential information
Emergency flashers
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch
once again.
■Emergency flashers
If the emergency flashers are used for a long time while the hybrid system is
not operating (while the “READY” indicator is not illuminated), the 12-volt \
bat-
tery may discharge.
The emergency flashers are used to warn other drivers when the
vehicle has to be stopped in th e road due to a breakdown, etc.

652
PRIUS_OM_OM47B54U_(U)
8-2. Steps to take in an emergency
If you think something is wrong
●Fluid leaks under the vehicle
(Water dripping from the air co nditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● High coolant temperature warning light flashes or comes on
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
● Engine missing, stumbling or running roughly
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spon gy feeling, pedal almost touches
the floor
If you notice any of the follow ing symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

653
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light and warning buzzer (red
indicator)
*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Brake system warning light (yellow indicator)
Indicates a malfunction in:
• The regenerative braking system; or
• The electronically controlled brake system
→ Have the vehicle inspected by your Toyota dealer
immediately.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Low engine oil pressure warning light
(warning buzzer)
*2
Indicates that the engine oil pressure is too low
→ Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system; or
• The electronic throttle control system
→ Have the vehicle inspected by your Toyota dealer
immediately.

6548-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
→ Have the vehicle inspected by your Toyota dealer
immediately.
(U.S.A.)
(Canada)
ABS warning light Indicates a malfunction in:
• The ABS; or
• The brake assist system
→ Have the vehicle inspected by your Toyota dealer
immediately.
(Red/yellow)
Electric power steering system warning light (warning
buzzer)
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
→ Have the vehicle inspected by your Toyota dealer
immediately.
(Flashes)
(If equipped)
PCS warning light
When the warning light flashes (and a buzzer sounds):
Indicates a malfunction in the PCS (Pre-Collision System)
→ Have the vehicle inspected by your Toyota dealer
immediately.
When the warning light flashes (and a buzzer does not
sound):
Indicates that the PCS (Pre-Collision System) is temporar-
ily unavailable, possibly due to either of the following:
• An area around the radar sensor or camera sensor being dirty or covered with condensation, ice, stickers,
etc.
→ Clear the dirt, condensation, ice, stickers, etc.
(→P. 270)
• Radar sensor or camera sensor operational conditions (such as temperature etc.) being not met
→ Driving is possible in th is case. The PCS (Pre-Colli-
sion System) will be enabled if the operational condi-
tions (such as temperature etc.) are met again.
When the warning light is illuminated:
Either the VSC (Vehicle Stability Control) system or PCS
(Pre-Collision System) is disabled or both are disabled.
→ To enable the PCS, enable both the VSC system and
PCS. ( →P. 279, 404)
Warning lightWarning light/Details/Actions